Chain-dog extractor.



No. 760,041- PATENTED MAY 17, 1904. O. TAUBER.

CHAIN DOG EXTRAGTOR.

APPLICATION FILED JAN. 6, 1904.

N0 MODEL.

'2 is an enlarged sectional detail of portions of UNITED STATES Patented May 17, 1904.

OTTO TIAUBER, OF CAIRO, ILLINOIS.

CHAIN-DOG EXTRACTOR.

SPECIFICATION forming part of Letters Patent No. 760,041, dated May 17, 1904.

Application filed January 6, 1904.

To (LU 10/1/0712, it may concern:

Be it known that I, OTTO TAUBER, a citizen of the United States, residing at Cairo, in the county of Alexander and State of Illinois, have invented a new and useful Chain-Dog Extractor, of which the following is a specification.

This invention relates to devices employed more particularly for extracting chain-clogs from logs in rafting and lumbering operations, but may be employed in extracting any object without a head or other lateral projection, and has for its object to provide a simply constructed and easily applied and operated device of this character in the use of which the article to be extracted may be firmly gripped at any point in its length regardless of the presence or absence of a head or other lateral projection thereon and a powerful leverage applied, with the grip increasing uniformly Irvith the increase of the power applied to the ever.

With these andother objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters, there is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, as various changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing from the principle of the invention or sacrificing any of its advantages, and the right is therefore reserved of making all the changes and modifications which fall within the scope of the invention and the claims made therefor.

In the drawings thus employed, Figure 1 is a perspective view of the device applied. Fig.

the operative ends of the gripping-jaws, illustrating the action when applied to the edges Serial No. 187,976. (No model.)

of a dog. Fig. 3 is a similar view illustrating the action when applied to the flat sides of a dog.

The chain-dogs employed 1n rafting and lumbering operations consist of flat bars of ing into the log and the other end perforated for a ring by which sections of chains are connected and are formed without heads or other lateral projections. In extracting these dogs resource is usually had to hammers or mauls to loosen them and to a bar for insertion through the chain-ring and forming a lever to extract them. This procedure is both laborious and clumsy and frequently results in breakage of them, after resulting in breaking the rings. It is further objectionable from the fact that it necessitates the operator to carry two separate implements, which are frequently lost overboard.

The improved device described and shown herein is designed to grip the edges or sides of the dog, independently of the chain-ring, with suflicient tenacity to effect its withdrawal when requisite force is applied, and is so constructed that the grip increases with the power applied, and thus corresponds to the resistance encountered and provides for the auto matic regulation of the force to the work required to be performed.

The implement of the present invention comprises a pair of gripping and extracting members, each composed of an inward curved jaw 10 and 11, respectively, and a straight shank 12, the members being connected intermediate of their ends by a pivot 12, the jaw 10 being longer than the jaw 11 for a purpose that will presently appear. Pivotally connected with the upper ends of each of the shanks 12 is a link 13 14, respectively, these links being connected by a pivot 15, common to both and to a lever 20, carrying a fulcrumbar 21, the upper end of which is pivoted at 21 to the lever and having its lower end provided with a foot, the under face of which is curved at 23 to conform to the log or other object upon which it rests. The opposing -metal having one end wedge-shaped for drivterminals of the jaws are chisel-edged, and the terminal. of the member 10 is formed with claws 18 and 19, which are adapted to straddle the object with which the implement coacts, the wall 19 of the crotch being formed with a chisel edge in order to bite into the object to insure that a proper purchase is had thereon.

The chain-dog 25 is shown inserted in the log 24: and with a chain-ring 26 attached.

Generally two of the dogs are united by the chain-section; but frequently-the dog with the ring only is encountered and then again it is often required to extract dogs from which the rings are broken or otherwise removed, and the implement herein described operates equally well upon the dogs in all the conditions under which they are encountered.

In operating the device the two chisel-edged terminals 16 17 are placed over on each edge of the'dog, with the spaced claws straddling one of the edges and with the fulcrum-standard upon the log. When power is applied to the lever 20, the links 13 14 will cause the firm compression of the jaw members and correspond ingly compress the reversely-disposed chisel-edged terminals against the opposite edges of the dog and bite into it and extract it from the log.

In event of a dog being encountered which is too thick to be embraced by the claws then the chisel-edged terminals of the latter will be employed instead of the wall 19 between the claws, with the same results as when the said wall is employed.

It will be obvious by this arrangement that a very strong and durable implement is produced which will extract any object which does not possess resistance in excess of the power possible to be applied by its lever 20 and whose grip will be increased as the power is increased.

The parts will preferably be of steel of sufficient strength to resist the strains to which they will be subjected.

Having thus described the invention, what is claimed is 1. In an implement of the class described, two opposing jaw members pivotally united and of unequal lengths and. having chisel-edged terminals with spaced claws extending in advance of the terminal of said longer jaw member, and means for forcibly compressing said jaw members.

2. In an implement of the class described, two opposing jaw members of unequal lengths intermediately pivoted, links pivotally connected to said jaw members at one end and likewise pivotally united at their other ends to each other, the free ends of said jaw members having chisel-edged terminals with spaced claws extending in advance of the terminal of said longer jaw member, and a lever connected to forcibly distend said united links and jaw members.

3. In an implement of the class described, two opposing jaw members of unequal lengths intermediately pivoted, links pivotally connected to said jaw members at one end and likewise pivotally united at their other ends to each other, the free ends of said jaw members having chisel-edged terminals with spaced claws extending in advance of the terminal of said longer jaw member, a standard, and a le- Ver intermediately pivoted in said standard and pivotally united to said links at theirv meeting-points.

In testimony that I claim the foregoing as my own I have hereto aifixed my signature in the presence of two witnesses.

OTTO TAUBER.

Witnesses:

PETER DAY, WILLIAM E. HENDRICKS. 

